Lighting device



FIG. 1 is a perspective view of a lighting device,

FIG. 2 is a top view of the lighting device,

FIG. 3 is a front view of the lighting device,

FIG. 4 is a right side view of the lighting device,

FIG. 5 is a left side view of the lighting device,

FIG. 6 is a back view of the lighting device; and,

FIG. 7 is a bottom view of the lighting device. 

CLAIM The ornamental design for a lighting device, as shown and described. 